Evaporation air humidifier

Abstract

Evaporation air humidifier having a pump, a motor for driving the pump having a shaft extending through a support plate into a water supply container, the shaft carrying a pump wheel or vanes disposed in a lower pot-shaped pump housing formed with a suction opening and a connecting piece for connecting a pressure line thereto, including a longitudinally divided support pipe surrounding the motor shaft and connecting the pump housing to the support plate, the support pipe being formed of two longitudinal shells having jointing surfaces formed with a wedge-shaped bevel at respective ends thereof extending into an opening formed in the support plate, at least one of the shells being suspended under clamping action from the support plate in vicinity of the opening formed therein, and connecting means for mechanically holding the shells and the pot-shaped pump housing together.

There are claimed: 
     
       1. Evaporation air humidifier having a pump, a motor for driving the pump having a shaft extending through a support plate into a water supply container, the shaft carrying a pump wheel or vanes disposed in a lower pot-shaped pump housing formed with a suction opening and a connecting piece for connecting a pressure line thereto, comprising a longitudinally divided support pipe surrounding the motor shaft and connecting the pump housing to the support plate, said support pipe being formed of two longitudinal shells having jointing surfaces formed with a wedge-shaped bevel at respective ends thereof extending into an opening formed in the support plate, at least one of said shells being suspended under clamping action from the support plate in vicinity of said opening formed therein, and connecting means for mechanically holding said shells and said pot-shaped pump housing together. 
     
     
       2. Evaporation air humidifier according to claim 1 wherein each shell has two flanges disposed above one another at the respective end thereof extending into said opening formed in the support plate, said flanges having a mutual spacing substantially equal to the thickness of the support plate, said wedge-shaped bevel having such an angle that, by lateral swinging of said beveled shell about an upper edge of the lower of said flanges, the upper flange is freed from the support plate. 
     
     
       3. Evaporation air humidifier according to claim 1 wherein the bevels at the respective ends of said shells define a V-shaped recess. 
     
     
       4. Evaporation air humidifier according to claim 1 wherein each shell carries part of a cover for the lower pot-shaped pump housing. 
     
     
       5. Evaporation air humidifier according to claim 4 wherein said cover in the region of a parting line thereof has a tongue-and-groove joint. 
     
     
       6. Evaporation air humidifier according to claim 4 wherein said cover is formed of elastic plastic material and is formed with a bead at the periphery thereof, and the lower pot-shaped pump housing has a pot-shaped jacket formed with an annular groove in which said bead engages. 
     
     
       7. Evaporation air humidifier according to claim 1 wherein one of said shells has two flanges disposed above one another at the respective end thereof extending into said opening formed in the support plate, said flanges having a mutual spacing substantially equal to the thickness of the support plate, said other of said shells having only a lower flange, and said wedge-shaped bevels being formed so that, in installed condition, said support pipe is firmly clamped against an edge thereof defining said opening formed therein. 
     
     
       8. Evaporation air humidifier according to claim 7 wherein said wedge-shaped bevels are formed with a slight inclination. 
     
     
       9. Evaporation air humidifier according to claim 7 wherein the support plate is formed at the upper side thereof with a recess for receiving the upper flange of said one shell therein. 
     
     
       10. Evaporation air humidifier according to claim 2 or 7 wherein said support pipe is cylindrical, and the lower flange extends outwardly collar-like to an extent greater than the upper flange, said upper flange having a dimension in direction of said jointing surfaces equal to the outer diameter of said support pipe. 
     
     
       11. Evaporation air humidifier according to claim 2 or 7 wherein said support pipe has a rectangular cross section, and the lower flange extends outwardly collar-like to an extent greater than the upper flange, said upper flange having a dimension in direction of said jointing surfaces equal to the width of said support pipe. 
     
     
       12. Evaporation air humidifier according to claim 2 or 7 wherein an upper limiting edge of the support plate defining said opening formed therein is formed with a chamfer. 
     
     
       13. Evaporation air humidifier according to claim 7 wherein said other of said shells having only a lower flange having means for arresting movement thereof in vicinity of said pot-shaped pump housing for protecting the same against shifting in direction of the axis of said support tube. 
     
     
       14. Evaporation air humidifier according to claim 13 wherein said movement arresting means are formed of a bead disposed on a free peripheral region of said housing bottom, said bead being engageable in an annular groove formed in said pot-shaped jacket. 
     
     
       15. Evaporation air humidifier according to claim 1 wherein one of said shells carries half of a cover for the lower pot-shaped pump housing, half of a jacket of the lower pot-shaped housing as well as the entire bottom of the lower pot-shaped housing, and the other of said shells forming an integral component with the other half of said cover and of said jacket, said other of said shells locking with said housing bottom against lateral outward swinging. 
     
     
       16. Evaporation air humidifier according to claim 15 including a pin disposed at the underside of said pot-shaped jacket and extending in axial direction of said support pipe, said pin engaging in a bore formed in said housing bottom.